Consider COB LED Strip style. It is MUCH better and already has a good light diffuser.
If Pixel Size is not a problem you should use 24V LED (pixel size is about 5sm or 2") Strips instead of 5V (pixel size is a single LED).
I am not familiar with WLED and how good is an WLED-HE integration (many people like WLED) but please check PixelBlaze as a controller for addressable LEDs. I have very good experience with PixelBlaze (15 LED projects already in place) and integration with HE is excellent and of course, 100% local.
The selected PS should be OK but I my preference is an open frame PS.
Not much effects will be done in the kitchen. I will need to look at documentation or videos to do this. And yes, just a lot of planning to buy the necessary. I recently setup my network stack running Kubernetes and now was looking into WLED.
I have considered COB LED strips. I'll need to check on those.
As for PixelBlaze, I will utilize in my next project. Since I am already knee deep in WLED, might as well go in but PixelBlaze is very nice of what I have seen.
The only effect mine in kitchen do is go red when alarm is armed so that I know that alarm is still armed and don't let dogs out in the morning.
Is it only available for purchase on their equipment or can you load the control software on your own hardware for free like WLED?
Many people on a PixelBlaze forum asked this question many times.
PixelBlaze is nothing more than ESP32 with two 3.3V-to-5.0V Voltage Translators for Data and Clock lines. So, in theory it should be possible to load PixelBlaze executable to any version of the ESP32 Boards. But NO, as of today they do not offer SW-only solution.
And as a result you must buy a ready-to-go preprogrammed PixelBlase (i.e. ESP32 with minor added hw).
From the other side, since WLED is open source you should be able to load it on a PixelBlaze Board. But this makes very little sense if any at all.
In my case, many PixelBlase LED Lighting projects not only doing Lighting but also a very nice Status Indicators. For instance, under cabinets LED strip is an indicator for what appliance is already On, which one could be turned On and which one cannot. The reason for this automation is - I am in a very old apartment building with only one 20A circuit braker for the entire kitchen.
Yes, definitely not doing that. 
I have a couple of ESP32s and light strips not doing anything so was hoping to take Pixelblaze for a test drive.
I need to figure out how to tap into my dishwasher. One of my responsibility is emptying and filling the dishwasher so having those lights indicate the status of the dishes in the dishwasher would be ideal. It might be time to pick out a vibration sensor and see if that will work because there is no access to power supply. Hmmmmmm.......
If this is my choice, I will consider power monitoring option.
For this reason I am using IotaWatt on every circuit in the power panel (and many power plugs with power monitoring option in addition).
I am near 100% sure you should be able to monitor Dishwasher related circuit (very often this is individual wiring but even if it is combined with something it should not be a problem). Adding IotaWatt to yours home automation toys is my primary recommendation but there are many different choices. For the Electric Panel Power Monitoring you will need Current Sensor(s) based on Current Transformers (better to be a split version, very easy to install them).
I think my simple Dishwasher issue is not enough to justify a $389 solution. I am going to try using vibration sensors. If that doesn't work, they go back to Amazon and I continue to do it the old-fashioned way.
How good you are with DIY projects?
If "yes" you can create cheap but reliable current sensor yourself.
For instance here is a result from very quick Amazon search for current sensor (I am sure there are many other):
https://www.amazon.com/Gravity-Conversion-Transformer-Non-contact-Measurement/dp/B07Y8GK8MG/ref=sr_1_19?crid=2Y06UM8T4LXRX&dib=eyJ2IjoiMSJ9.GU9J07IsA-N6J51RJkAZ4poPnCZi9HwNzVnnCgKPDtwVUvQ1GBsLCIfVwNZwtueNFcXC6uINEriTBu3aAd3o6qaN-Itghy8uDh5MmpXLA66alHhkkcIyKD3S4aubi7qBuxzuPVBW6iiBCjbmTt3cPlv7GXHj8Uaqv8OjitS-7GtMjJx0xClmufH5te5Y2qgx.DC-jVtoHXU3No3oKoBl28yYomhCvV7KLDpRYdi-d1_o&dib_tag=se&keywords=current%2Bsensor&qid=1729267094&sprefix=current%2Bsensor%2Caps%2C90&sr=8-19&th=1
Combine it with ESP32/Hubduino project and you will have very reliable 100% HE compatible current sensor.
BTW, with IotaWatt (yes, it is not cheap) you will be able to create many nice automations based on power monitoring. For instance, i have a reminder if my electric range and/or stove is On for very long time. Furthermore, it will be automatically turned Off if apartment becomes unoccupied but the appliance accidentally left On. This project was inspired by my neighbor who almost catch a fire.
I use Zooz's vibration sensor with my dishwasher: ZOOZ ZSE43 TILT | SHOCK XS SENSOR – ZOOZ. Hubitat is able to notify me to my phone and works just fine for an alert. As for an indicator for green/red, that I have not done.
Nevertheless, I would like to say thank you for all your support in this journey. I have bought the required devices and will be looking forward to installing this setup under my cabinet. And yes @stephen_nutt, the Dig-Uno DOES have support for 2 LED light strips. It's hidden but I found it. It will be some time until I have this installed but thanks again everyone.
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Sorry for taking your thread a little sideways talking about dishwashers.
It's all good. People sharing their interests/hobbies is what people enjoy doing and I am not here to diminish, especially dishwashers. Dishwashers can now be talked about in the Lighting forums now 
