Ok, I've found a solution. We have to replace styles.xml file with our own definition.
{{#xlsxReplace "xl/styles.xml"}}
<stylesheet xmls="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<numFmts/>
<fonts/>
<fills/>
<borders/>
<cellStyleXfs/>
<cellXfs/>
<cellStyles/>
<dxfs/>
<tableStyles/>
</stylesheet>
{{#xlsxReplace "xl/styles.xml"}}`