reduce code duplication in renderer of html colors
reduce code duplication in renderer of html colors

Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText