render.OverrideBlend - Add note about issue-5693

render.OverrideBlend - Rewrote page, example is still overcomplicated + Color and alpha values are 0-1 not 0-255 + Explicitly differentiate color vs alpha in separated blending mode

render.OverrideBlend - Added Menu State

render.OverrideBlend - moved example

render.OverrideBlend - No change reason was given

render.OverrideBlend - No change reason was given

render.OverrideBlend - No change reason was given