I have one more guess at a header patch for Touch/Mini if you want to try it:
Spoiler:
Code:
<Patch>
# libnickel.so.1.0.0 in firmware 3.8.0 (048bb0b071)
#
patch_name = `Custom header style for Touch/Mini`
patch_enable = `yes`
replace_string = D36F2C, `* {\nfont-size: 20px;\nfont-family: Avenir;\nbackground-color: transparent;\npadding-top:3px;\n}\n\n[qApp_deviceCodeName="pixie"] {\nfont-size: 18px;\n}\n\n[qApp_deviceCodeName="dragon"] {\nfont-family: Georgia;\nfont-size: 26px;\n}\n\n[qApp_localeName="ja_JP"] {\nfont-family: A-OTF Gothic MB101 Pr6N;\n}`, `* {\nfont-size: 20px;\nfont-family: Avenir;\nbackground-color: transparent;\npadding-top:3px;\n}`
#
# BE CAREFUL NOT TO ALTER THE LENGTH OF THE FOLLOWING REPLACEMENT STRINGS!
# (Add or remove spaces if necessary to keep the total length the same.)
#
# Touch font size:
#replace_string = D36F30, `font-size: 20px;`, `font-size: 20px;`
#
# Mini font size:
replace_string = D36F30, `font-size: 20px;`, `font-size: 18px;`
#
# Touch/Mini font family:
#replace_string = D36F41, `font-family: Avenir;`, `font-family: Amasis;`
replace_string = D36F41, `font-family: Avenir;`, `font-family: Avenir;`
#replace_string = D36F41, `font-family: Avenir;`, `font-family: Georgia;`
#
</Patch>