Nice work. Suggestion: Add support for frosted glass since it's an easy extension. You would only need another parameter for an RGBA color for "tint". Then d

Nice work. Suggestion: Add support for frosted glass since it's an easy extension. You would only need another parameter for an RGBA color for "tint". Then draw over the blurred area with this color. For example, setting tint to rgba(255,255,255,0.15) will look like the iOS style frosted effect. Varying the rgb and alpha can show other interesting options.