diff --git a/HtmlColor-object-API.md b/HtmlColor-object-API.md
index 661c3e3..954a044 100644
--- a/HtmlColor-object-API.md
+++ b/HtmlColor-object-API.md
@@ -24,5 +24,12 @@ Construct a HtmlColor that will have its values set in latter operations.
 CAUTION:  The Color member is not initialized and may not be consistent until set.
 
 ## Methods
-(none)
+### static HtmlColor BilinearBlend(HtmlColor c00, HtmlColor c01, HtmlColor c10, HtmlColor c11, float x, float y);  
+This will blend between four colors by the amount defined by 2d weighting values.  
+c00 - upper left quadrant color  
+c01 - upper right quadrant color  
+c10 - lower left quadrant color  
+c11 - lower right quadrant color  
+x - unit value (0.0 - 1.0) that defines the blend progress in horizontal space  
+y - unit value (0.0 - 1.0) that defines the blend progress in vertical space