There are a few factors that should be taken into consideration when selecting the correct substrate. One of the key factors you should keep in mind is opacity.
Using darker substrates can affect the appearance of all fluorescent and pearlescent foils, along with some pigments. Applying these over darker substrates can alter and darken the appearance of the listed foils.
You may want to consider using white stamping foils underneath lighter colours first.
This does not apply to metallic and holographic foils as these foils will provide complete opacity on any substrate without any show through.