I really like that using the old smaller buttons is still an option as some folks seem to prefer them.
However, personally I like the new, larger buttons. Would it be possible to create a setting in the Remoods theme to allow the user to enable or disable the new larger buttons?
Ok, I'll give a try on it later 
Thank you so much! I'm sure a lot of folks will appreciate that!
I went ahead and logged Remoods does not honor the new "New note" and "New to-do" buttons. · Issue #48 · Sinacs/Joplin.Plugin.ReMoods.Theme · GitHub so that we don't lose track of this. 
Thank you
If you really need new icon, I found now on my device(joplin 2.110.19, ReMoods Theme 4.3.1) have:
but if you let the width shorter:
the new big icons are displayed.
p.s. thank you Sinacs, this plugin is so good:)
Thank you @yiyian-Lee! Glad you like to use ReMoods Feel free to let me know if you have any suggestions to improve the theme.
@joplin_user Yes, as @yiyian-Lee said, you can reduce the panel width to show the big buttons, I didn't strict to small buttons when it's separated into two columns. This is one of the options that you can use the big buttons. But anyway, I will still go with your suggestion.