# Darken function is messing with compiling

**URL:** <https://forum.shopware.com/t/darken-function-is-messing-with-compiling/45485>\
**Category:** Themes & Design\
**Created:** [28. April 2017 um 18:25 UTC](https://forum.shopware.com/t/darken-function-is-messing-with-compiling/45485 "2017-04-28T18:25:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Misengo](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.shopware.com/misengo/32/21446_2.png) [@Misengo](https://forum.shopware.com/u/Misengo)\
**Post date:** [28. April 2017 um 18:25 UTC](https://forum.shopware.com/t/darken-function-is-messing-with-compiling/45485/1 "2017-04-28T18:25:28Z")

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Using the standard config I always get this error when trying to compile the template/theme.

_Während der Bearbeitung von Shop “Deutsch” ist ein Fehler aufgetreten: error evaluating function `darken` The first argument to darken must be a color index: 21296_

Any ideas?

EDIT: I copied the current \_variables/\*.less files from the Github Repo just to be sure I still have the original ones. Still no comiling of the responsive theme.