hi,
You've got a couple of possiblities:
- you can choose to use a colour palette with either 8 or 16 colours. The 16 colours one is bigger than the other.
- you can go to the options->general->gridlayout and change this setting to a smaller grid (this will make all controls larger)
- you can go to the options->general->screensize and change this setting to a bigger resolution (this will make all controls larger)