WIP: Add COSAfrica theme

cosafrica-logo-hideonce/cosafrica-logo-hideonce.plymouth

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+[Plymouth Theme]
+Name=COSAfrica logo hideonce
+Description=COSAfrica plymouth theme by UBTeam.
+ModuleName=two-step
+
+[two-step]
+ImageDir=/usr/share/plymouth/themes/cosafrica-logo-hideonce/images
+HorizontalAlignment=.5
+VerticalAlignment=.5
+Transition=none
+TransitionDuration=0.0
+BackgroundStartColor=0x000000
+BackgroundEndColor=0x000000

cosafrica-logo-pulse/README

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+== 16 color ==
+Sometimes framebuffers offer no more than 4 bits per pixel, for these cases we
+have a special 16 color version of images. Those images should not contain
+alpha channels and use solid color throughout (no gradients etc.).
+
+In the script itself we use a solid color background, the images should use
+matching colors when needing to avoid alpha.
+
+Usually the workflow is to take the regular version and replace the alpha,
+then possibly also overly colorful elements, save it and convert to 16 colors.
+Most of the time you can use drop shadows, but all in all no more than 16
+colors can be used, so you will have to make sure the clipped version's drop
+is still appearing as expected.
+
+To convert to <= 16 color version use (< when fewer colors found)
+  for foo in *; do pngtopnm $foo | pnmquant 16 | pnmtopng > 16.png; mv 16.png $foo; done
+
+You may want to check that the output makes sense.

cosafrica-logo-pulse/cosafrica-logo-pulse.grub

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+#set_background_image "images/tile.png";
+
+set menu_color_normal=white/black
+set menu_color_highlight=black/light-gray
+if background_color 0,0,0; then
+  clear
+fi

cosafrica-logo-pulse/cosafrica-logo-pulse.plymouth

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+[Plymouth Theme]
+Name=COSAfrica logo pulse
+Description=A COSAfrica theme that features a blank background with a logo.
+ModuleName=script
+
+[script]
+ImageDir=/usr/share/plymouth/themes/cosafrica-logo-pulse
+ScriptFile=/usr/share/plymouth/themes/cosafrica-logo-pulse/cosafrica-logo-pulse.script