urxvt: Set base16 colorscheme

Sometime it is usefull to set the colorscheme directly in urxvt instead
of the base16-shell script (when script loading is slow etc)

Xresources/.Xresources

@@ -1 +1,2 @@
 #include ".Xresources.d/urxvt"
+#include ".Xresources.d/base16-solarflare-256"

Xresources/.Xresources.d/base16-solarflare-256

@@ -0,0 +1,54 @@
+! Base16 Solar Flare
+! Scheme: Chuck Harmston (https://chuck.harmston.ch)
+
+#define base00 #18262f
+#define base01 #222e38
+#define base02 #586875
+#define base03 #667581
+#define base04 #85939e
+#define base05 #a6afb8
+#define base06 #e8e9ed
+#define base07 #f5f7fa
+#define base08 #ef5253
+#define base09 #e66b2b
+#define base0A #e4b51c
+#define base0B #7cc844
+#define base0C #52cbb0
+#define base0D #33b5e1
+#define base0E #a363d5
+#define base0F #d73c9a
+
+*foreground:   base05
+#ifdef background_opacity
+*background:   [background_opacity]base00
+#else
+*background:   base00
+#endif
+*cursorColor:  base05
+
+*color0:       base00
+*color1:       base08
+*color2:       base0B
+*color3:       base0A
+*color4:       base0D
+*color5:       base0E
+*color6:       base0C
+*color7:       base05
+
+*color8:       base03
+*color9:       base08
+*color10:      base0B
+*color11:      base0A
+*color12:      base0D
+*color13:      base0E
+*color14:      base0C
+*color15:      base07
+
+! Note: colors beyond 15 might not be loaded (e.g., xterm, urxvt),
+! use 'shell' template to set these if necessary
+*color16:      base09
+*color17:      base0F
+*color18:      base01
+*color19:      base02
+*color20:      base04
+*color21:      base06