Compile it as a standalone document to create a pdf (or eps) that only has your logo. In this document all the adjustments for overlapping letters etc can be done manually.
This pdf can then be included in all other documents via
\includegraphics which makes sure that it will scale well.
Edit: to address the addition about changing the colour
I think this is the wrong approach. The colour of a logo should not be changed, the colour of a logo is part of the logo. If there should be different versions with different colours, then they should be provided as separate files, but users should not alter the logo itself, this would violate the purpose of any corporate design.
Take this logo for example:
The colour is just as iconic as the shape of the logo. For most people it is enough to see the specific colour to think about this company. Now imagine someone would recolour it to
while the shape is the same, it is no longer this easy to recognise.
For example my company provides three versions of the logo:
- one with transparent background
- one with white background and some additional margin to use in situations where the normal logo would be hard to read
- and a colour inverted version with white font and transparent background to use on dark background (e.g. on our tshirts)
I never had to adjust any colour, one of these versions always worked fine.