Hi to everybody who likes colors,
the colour with … block does not handle exact RGB. Instead it uses percentages.
For example:
The iOS standard blue “007AFF” is RGB 0,122,255.
In Thunkable blocks you have to use 100/255*x
So
R =100/255 * 0 = 0
G=100/255 * 122= 48
B=100/255 * 255=100
I hope this helps everybody who is facing the same problem and does not want to waste time 