concrete5 Environment Information
# concrete5 Version
Core Version - 5.7.5.8
Version Installed - 5.7.5.8
Database Version - 20160412000000
# concrete5 Packages
Add and Remove Classes and IDs (0.9.5), Fruitful (1.2), Honest Websites Back To Top (0.9.4), Responsive Embed (1.0.0), Share Me (0.9.1), Simple Anchor (1.0.1), Spacer (0.9.3), Thumbnail Generator (0.9.0.6), Touch Gallery (2.1.5), WatermarkNN (1.1.1).
# concrete5 Overrides
blocks/image/view.php, blocks/image, js/redactor.js, languages/da_DK/LC_MESSAGES/messages.mo, languages/da_DK/LC_MESSAGES, languages/da_DK, languages/de_DE/LC_MESSAGES/messages.mo, languages/de_DE/LC_MESSAGES, languages/de_DE, languages/el_GR/LC_MESSAGES/messages.mo, languages/el_GR/LC_MESSAGES, languages/el_GR, languages/fi_FI/LC_MESSAGES/messages.mo, languages/fi_FI/LC_MESSAGES, languages/fi_FI, languages/fr_FR/LC_MESSAGES/messages.mo, languages/fr_FR/LC_MESSAGES, languages/fr_FR, languages/it_IT/LC_MESSAGES/messages.mo, languages/it_IT/LC_MESSAGES, languages/it_IT, languages/ja_JP/LC_MESSAGES/messages.mo, languages/ja_JP/LC_MESSAGES, languages/ja_JP, languages/nl_NL/LC_MESSAGES/messages.mo, languages/nl_NL/LC_MESSAGES, languages/nl_NL, languages/pl_PL/LC_MESSAGES/messages.mo, languages/pl_PL/LC_MESSAGES, languages/pl_PL, languages/pt_BR/LC_MESSAGES/messages.mo, languages/pt_BR/LC_MESSAGES, languages/pt_BR, languages/ru_RU/LC_MESSAGES/messages.mo, languages/ru_RU/LC_MESSAGES, languages/ru_RU, languages/sl_SI/LC_MESSAGES/messages.mo, languages/sl_SI/LC_MESSAGES, languages/sl_SI, languages/sv_SE/LC_MESSAGES/messages.mo, languages/sv_SE/LC_MESSAGES, languages/sv_SE, languages/tr_TR/LC_MESSAGES/messages.mo, languages/tr_TR/LC_MESSAGES, languages/tr_TR, src/Retina/RetinaImage.php, src/Retina/RetinaPicture.php, src/Retina, blocks/image/view.php, blocks/image, js/redactor.js, languages/da_DK/LC_MESSAGES/messages.mo, languages/da_DK/LC_MESSAGES, languages/da_DK, languages/de_DE/LC_MESSAGES/messages.mo, languages/de_DE/LC_MESSAGES, languages/de_DE, languages/el_GR/LC_MESSAGES/messages.mo, languages/el_GR/LC_MESSAGES, languages/el_GR, languages/fi_FI/LC_MESSAGES/messages.mo, languages/fi_FI/LC_MESSAGES, languages/fi_FI, languages/fr_FR/LC_MESSAGES/messages.mo, languages/fr_FR/LC_MESSAGES, languages/fr_FR, languages/it_IT/LC_MESSAGES/messages.mo, languages/it_IT/LC_MESSAGES, languages/it_IT, languages/ja_JP/LC_MESSAGES/messages.mo, languages/ja_JP/LC_MESSAGES, languages/ja_JP, languages/nl_NL/LC_MESSAGES/messages.mo, languages/nl_NL/LC_MESSAGES, languages/nl_NL, languages/pl_PL/LC_MESSAGES/messages.mo, languages/pl_PL/LC_MESSAGES, languages/pl_PL, languages/pt_BR/LC_MESSAGES/messages.mo, languages/pt_BR/LC_MESSAGES, languages/pt_BR, languages/ru_RU/LC_MESSAGES/messages.mo, languages/ru_RU/LC_MESSAGES, languages/ru_RU, languages/sl_SI/LC_MESSAGES/messages.mo, languages/sl_SI/LC_MESSAGES, languages/sl_SI, languages/sv_SE/LC_MESSAGES/messages.mo, languages/sv_SE/LC_MESSAGES, languages/sv_SE, languages/tr_TR/LC_MESSAGES/messages.mo, languages/tr_TR/LC_MESSAGES, languages/tr_TR, src/Retina/RetinaImage.php, src/Retina/RetinaPicture.php, src/Retina
# concrete5 Cache Settings
Block Cache - Off
Overrides Cache - Off
Full Page Caching - Off
Full Page Cache Lifetime - Every 6 hours (default setting).
# Server Software
Apache
# Server API
cgi-fcgi
# PHP Version
5.6.20
# PHP Extensions
bcmath, calendar, cgi-fcgi, Core, ctype, curl, date, dom, ereg, exif, filter, ftp, gd, gettext, hash, iconv, imap, ionCube Loader, json, libxml, mbstring, mcrypt, mysql, mysqlnd, openssl, pcre, PDO, pdo_mysql, pdo_sqlite, Phar, posix, Reflection, session, SimpleXML, sockets, SPL, sqlite3, standard, tokenizer, xml, xmlreader, xmlwriter, Zend OPcache, zip, zlib.
# PHP Settings
max_execution_time - 30
log_errors_max_len - 1024
max_file_uploads - 20
max_input_nesting_level - 64
max_input_time - 60
max_input_vars - 1000
memory_limit - 1024M
post_max_size - 8M
sql.safe_mode - Off
upload_max_filesize - 2M
mysql.max_links - Unlimited
mysql.max_persistent - Unlimited
pcre.backtrack_limit - 1000000
pcre.recursion_limit - 100000
session.cache_limiter - <i>no value</i>
session.gc_maxlifetime - 7200
opcache.max_accelerated_files - 2000
opcache.max_file_size - 0
opcache.max_wasted_percentage - 5
I usually don't add features to Touch Gallery unless there is real demand for it. So far you're the only ones asking for that feature.
Typically you would simply use templates to achieve what you want. If you have updated to the latest version you will see that there are now 11 templates included, some with borders and some without.
I am sure using the templates can achieve what you're after.