static const char col_gray1[]       = "#080808";
static const char col_gray2[]       = "#c6c6c6";
static const char col_gray3[]       = "#c6c6c6";
static const char col_gray4[]       = "#080808";
static const char col_gray5[]       = "#79dac8";
static const char col_cyan[]        = "#85dc85";