Hello everyone! Soooo, I may have accidentally gotten my hands on 13 18/20W 2 foot striplights from older electrical control cabinets. These fixtures are perfect for putting up along the ceiling and putting different coloured tubes into for fun! They have sockets too, which makes it super easy to daisy chain them. they are relatively easy to move around. However, I was blown away by the cost of coloured tubes, and since I dont have any coloured in my collection I would need to purchase some. Instead I have a lot of typical 830/840, and some 940 and also some older lovely T12 warm white tubes made by LUMA sweden.
I know that there are sleeves available that makes a tube coloured, but I wonder how good those really are. I would like input on it before I purchase any, they are a MUCH cheaper option than buying coloured tubes, plus being able to use any tube I want is appealing

But if they produce terrible colour then I will purchase coloured tubes instead. But if it's acceptable then those might be a great option!