Version 0.42 An exact color match is needed for background.
All colors are used as RGB values on 0-255 scale. Default 
palette includes blinking colors #111 (254,254,254)
#112 (255,255,151) and #224 (191,191,115) for PG

Version 0.42a fixed bug that did not allow saving collage and palette

Version 0.45 fixed bug introduced in Version 0.3 that cut last column of pixels off of converted bitmap.

Version 0.46 fixed bug which resulted from not handling totally blank lines internal to the image.

Version 0.47 added handling of SP icons that have center info. Added feature 
to exclude blinking colors for SP bmp to shp conversion.

Notes to 0.47
SP some icons have not been handled properly by previous versions of ShpEd. This should be corrected now. New sized icons can be added and centered and displayed properly. To use this feature load the shp file  (iconxxx.shp). Select the image you want. Load the new bitmap. Make sure the Steel palette is loaded, the use full palette and old header checkboxes are checked. Convert the bmp to shp then insert the bmp into the shp file. Switch to editing Bignew.shp (just written). Select the proper image number. Click the SPFix button. Click the Show button on the Fix window. An enlarged version of your bitmap should appear with crosshairs on it. Move the crosshairs to the pixel that you want to be at the center of the hex when using SP. (Take a look at some of the unmodified files to get an idea where this should be.) Click the Write button which will write the new header to the currently loaded shp file (bignew.shp in this case). Follow the usual procedure of replacing the icon file in SP with bignew.shp. This feature should be considered experimental at this point but I used it on some very unusual images and it worked.

SP uses quite a few flashing colors to animate water and the like. The color numbers are 112-127 and 224-255 for those who wish to edit the palette file. Usually, you wouldn't want your tank to have a flashing turret. Use the No-SP Flash checkbox to exclude the flashing colors when a bmp is converted to a shp image.