If you import a module as "qualified", the package will be colored yellow rather than blue, e.g.:
import qualified Prelude hiding (tan, cos) import Prelude hiding (tan, cos)
In the former case, import is bold blue, qualified is bold blue, Prelude is yellow, and hiding is black. In the latter (correct) case, import and hiding are bold blue and Prelude is blue.
With Geany 1.23.1