A lua version of colorblender.py
Accepts two hex colors and an alpha in the following order:
foreground background alpha
The closer the alpha is to 0 the more prominent the background will be in the resulting color
The closer the alpha is to 1 the more prominent the foreground will be in the resulting color
NOTE: # is interpreted as a comment so we need to wrap the input in quotes
$ lua colorblender.lua '#ffffff' '#000000' 0.1
#1a1a1a$ lua colorblender.lua ffffff 000000 0.1
#1a1a1a