The Sacgul alphabet was invented by Kim Godgul in 2007 as an alternative script for Korean and English. It uses 6 colors and 4 geometrical figures in order to make it an easy-to-use and simple script. The syllable blocks are based on his Godgul script. 'Sac' [saek] means 'color' in Korean and 'gul' means 'script, letters, text'.
More information about Kim Godgul's alphabets (in Korean)