fpvectorial: Disables the new layer tools code as it proved too little for SVG and re-enables the old system. Also found and fixed the SVG wrong colors: It was a wrong order of reading RGB values

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40783 4005530d-fff6-0310-9dd1-cebe43e6787f