Defect Description: Readablility reduced on clicking word buttons.
Steps to Reproduce this issue: Go to this link {Homepage of Experiment 10}, then select experiment, then try and click any of the words, it will change to dark red background with light grey font.
Expected result: The button should turn a more readable and contrasted pair.
Actual result: Screenshots (before, after):
Defect Description: Readablility reduced on clicking word buttons. Steps to Reproduce this issue: Go to this link {Homepage of Experiment 10}, then select experiment, then try and click any of the words, it will change to dark red background with light grey font. Expected result: The button should turn a more readable and contrasted pair. Actual result: Screenshots (before, after):
![selection_043](https://user-images.githubusercontent.com/43776677/53829582-74e81a80-3fa6-11e9-9156-4f11f872a118.png)