RiT dye rather than paint

I just found these in an old box that I had put away...they were experiments from long ago when I used to try my hand at modding.
These were originally a standard blue Thomas and Edward. I used Rit dye instead of painting them. There is some slight warping to Edward, but the Thomas came out well enough to use. If the boiled water is too hot it will warp to ruined, but after a few tries or a little luck, you can easily change the plastics color to almost anything.

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