评分4星，满分5星

由 radioguyuhf 发表于 Jan. 8, 2018 ·

Found link to Happy One and re-installed Theme and Font Size Changer. So far it is working.

Thank you Steven

这个评论是针对附加组件的一个早期版本的（62.0）。 

评分1星，满分5星

由 radioguyuhf 发表于 Jan. 7, 2018 ·

No longer works on my Window 7 computer.
None of the solutions I have found will work.
I would ask Thunderbird developers to incorporate Theme and Font changes inside Thunderbird itself without using an ADD-ON or extension. If this doesn't happen I will be forced to use a different email program. It will be a sad day as I have used Thunderbird for many years. Thunderbird may be near the end of its life-cycle and if so, then so be it.
My 5 star rating is now a 1 star.

If anyone does have a real solution that really will work, please advise.

这个评论是针对附加组件的一个早期版本的（62.0）。