diff --git a/main/img/fill_in_blanks.gif b/main/img/fill_in_blanks.gif index 9b71d861f4..8c1607c59c 100644 Binary files a/main/img/fill_in_blanks.gif and b/main/img/fill_in_blanks.gif differ diff --git a/main/img/hotspot.gif b/main/img/hotspot.gif index 19bc301054..79ad921108 100644 Binary files a/main/img/hotspot.gif and b/main/img/hotspot.gif differ diff --git a/main/img/matching.gif b/main/img/matching.gif index d22b6597d9..efe984c1e6 100644 Binary files a/main/img/matching.gif and b/main/img/matching.gif differ diff --git a/main/img/mcma.gif b/main/img/mcma.gif index 044509bda1..155d63e8c3 100644 Binary files a/main/img/mcma.gif and b/main/img/mcma.gif differ diff --git a/main/img/mcua.gif b/main/img/mcua.gif index 46810343ed..cbf7712ee3 100644 Binary files a/main/img/mcua.gif and b/main/img/mcua.gif differ diff --git a/main/img/open_answer.gif b/main/img/open_answer.gif index 27db7b20a4..ae27ad48a8 100644 Binary files a/main/img/open_answer.gif and b/main/img/open_answer.gif differ